EP2646180A1 - Pressscheibe - Google Patents
PressscheibeInfo
- Publication number
- EP2646180A1 EP2646180A1 EP11790616.4A EP11790616A EP2646180A1 EP 2646180 A1 EP2646180 A1 EP 2646180A1 EP 11790616 A EP11790616 A EP 11790616A EP 2646180 A1 EP2646180 A1 EP 2646180A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing ring
- disc according
- filler
- pressing
- recess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001125 extrusion Methods 0.000 title abstract 7
- 238000007789 sealing Methods 0.000 claims abstract description 70
- 239000000945 filler Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 39
- 238000009423 ventilation Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000002788 crimping Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C26/00—Rams or plungers; Discs therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/06—Platens or press rams
- B30B15/065—Press rams
Definitions
- the invention relates to a dummy block for mounting on the ram of a
- Pressing device wherein the pressure disk is formed according to the preamble of claim 1.
- presses which comprise pressure disks with which pressure can be transmitted to the material to be pressed.
- Press discs are generally rotationally symmetrical and are located during the pressing process in a transducer which encases them. In general, there is the
- German Patent DE 100 36 463 B4 discloses an advantageous press disk and a press device with such a press disk, in which the press disk comprises a filler with a pressing surface, with which a force can be exerted on a material to be pressed.
- the filler is formed on its outer diameter conical with an outer cone surface and surrounded by a likewise belonging to the pressure washer sealing ring, which is designed with its inner diameter so that it forms a gap with its inner cone surface and the outer cone surface of the filler. Further extends between the filler and the sealing ring at least one radial gap which widens conically from the inside out.
- German utility model DE 73 14 414 U describes a dummy block for press punches of extruders, wherein the dummy block a frontal, the pressed material Having facing circular recess, and further comprising a conical seat for abutment of an inner plate which terminates flush in the applied state with the Pressusionnstirn Formation comprises.
- these include various components that could for example be made in one piece to reduce the number of components.
- the sealing ring, the intermediate ring and the press-disc core according to DE 100 36 463 B4 or DE 73 14 414 U may be made in one piece in one component. However, this impairs the elasticity of the sealing ring, since the one-piece component formed in this way would no longer spread openly in the outer region.
- the object of the invention is therefore to provide an improved dummy block with efficient ventilation, high wear resistance and thus high durability, which has as few individual parts and the lowest possible height. According to the invention this object is achieved by a dummy block with the features of the independent claim 1. Advantageous developments of the dummy block will become apparent from the dependent claims 2-10.
- the pressure disk according to the invention is suitable for mounting on the press ram of a pressing device, wherein the pressure disk comprises at least one filling piece with a pressing surface, via which a force can be exerted on a material to be pressed.
- the filler is formed on its outer diameter conical with an outer cone surface and surrounded by a likewise belonging to the pressure washer sealing ring, which is designed with its inner diameter so that it with its inner cone surface and the
- the pressure washer according to the invention is characterized in that the sealing ring has a circumferential recess which extends from the radial gap between filler and sealing ring in the sealing ring inside.
- the puncture preferably runs in the axial direction. Due to the circumferential groove, the sealing ring becomes bendable and can expand in a controlled manner to the outside over the entire circumference during the pressing process. Due to the dimensions and arrangement of the recess, the elasticity and thus the degree of spreading of the sealing ring can be adjusted specifically.
- the sealing ring can be made in one piece, so that the pressing plate consists essentially only of the filler, the sealing ring and any fasteners without the advantageous
- the puncture can either be located directly on the inner cone surface of the sealing ring, or between the recess and the inner cone surface, a bearing surface is arranged on the sealing ring.
- a bearing surface By such a bearing surface, the expansion of the sealing ring can be controlled even better controlled, because by resting on the
- Support surface can bend the filler only limited. Furthermore, it can be achieved by suitable dimensions, that the support surface deliberately yields minimally and thus allows the filler, in the course of operation of the dummy block, the sealing ring still spread wide enough to the outside. A yielding of the filler is thus desirable and can be adjusted specifically, so that the functionality of the dummy block is maintained even during prolonged operation. It can also be provided that the puncture partially penetrates the inner cone surface of the sealing ring. Further, the inner contour of the groove on its outside may have at least one step, wherein the groove tapers towards its bottom. Depending on the shape, the geometry and thus the bending behavior can be optimized by this step and the taper of the groove.
- the puncture has at least one
- Venting channel on which establishes a connection between the puncture and the environment.
- the filler can be connected directly to the sealing ring or mounted by means of at least one connecting element on the sealing ring and secured against axial movement, while the sealing ring is mounted on connecting means on the press ram of a pressing device.
- the sealing ring may then have means for preventing rotation relative to the ram of a pressing device.
- the pressure disk can be designed such that, by rotating the sealing ring about the axis of rotation of the pressure disk depending on the direction of rotation a backup of the pressure plate on the press ram of a pressing device against axial movement can be produced or released, whereby the sealing ring and the filler piece from the side of the pressure plate can be mounted on the punch and dismounted from.
- This has the advantage that the pressure disc is easy to assemble and disassemble from the front and can be replaced as a wearing part.
- the height of the dummy block can be significantly reduced, resulting in a weight saving and easier handling.
- the building heights to be achieved depend essentially on the elasticity of the hot-work steel used.
- low construction heights in the order of 75mm to 140 mm can be achieved by looking at the height of the dummy block about the distance between the pressing surface and the ram or an adapter piece of the press ram ,
- the above heights of the dummy block should not constitute a limitation of the invention, but also at higher heights causes the inventive structure of the dummy block the advantages described. Further advantages, features and expedient developments of the invention will become apparent from the dependent claims and the following description of preferred
- Fig. 1 shows an embodiment of the dummy block according to the invention with a
- Puncture; 2 shows the embodiment of Figure 1 with a support surface.
- FIG. 3 shows the section A-A through a sealing ring according to FIG. 1.
- Fig. 1 shows an embodiment of the dummy block according to the invention in a schematic cross section.
- the pressure plate 10 comprises a filler 20 with a front pressing surface 21, with the pressure on a material to be pressed can be applied.
- the filler 20 is tapered at its outer diameter with a
- outside taper surface 22 is formed and surrounded by a sealing ring 30 which is designed with its inner diameter so that it with its inner cone surface 34 and the
- outside taper surface 22 of the filler 20 forms a gap 60.
- a circumferential recess 31 is introduced, which extends from the radial gap 61 into the sealing ring 30 in.
- the recess 31 extends in the axial direction and thus parallel to the longitudinal axis of the pressure plate 10.
- the recess 31 can also extend in a direction to the longitudinal axis of the pressure plate 10.
- the width of the recess 31 depends essentially on the dimensions of the pressure plate 10 and the desired elasticity of the sealing ring 30, which is common
- Pulleys widths of the order of 4-8 mm have proved to be useful, since they are easy to manufacture and the sealing ring 30 does not weaken too much. Furthermore, it is still ensured that the filler 20 can be sufficiently supported on the sealing ring 30 during pressing. However, wider or narrower punctures are also possible.
- the recess 31 may also be made so wide that a ring can be inserted into it. This facilitates, if appropriate, the production of the recess 31, without To affect the operation of the dummy block, since the filler can be supported on the inserted ring.
- the depth of the groove 31 also depends on the dimensions of the dummy plate 10 and the desired elasticity of the sealing ring 30, wherein distances between the
- Pressing surface 21 and the bottom of the recess 31 in the order of 15-70 mm have proven to be expedient. Again, however, other depths are possible.
- the recess 31 may be arranged at different positions on the radial gap 61. For example, as shown in FIG. 1, it may be located directly on the inner cone surface 34 of the sealing ring 30. The inner cone surface 34 thus passes directly into the groove 31. The recess 31 could also be arranged on the outside so that it partially penetrates the inner cone surface 34 of the sealing ring 30. The inner cone surface 34 of the sealing ring 30 would then pass over the gap 61 into the recess 31 already.
- the recess 31 is arranged further inside the sealing ring 30, so that between the recess 31 and the inner cone surface 34 a
- Support surface 33 is provided on the sealing ring 30.
- the recess 31 then does not directly adjoin the inner cone surface 34, and this embodiment is shown in FIG.
- the width of this support surface 33 is variable, with support surfaces having a width of 3-5 mm have proven to be appropriate. However, very small widths of about 1 mm or larger widths over 5 mm can be selected. Over the width of the support surface 33, a desired yielding of the filler 20 during the operation of the
- the recess 31 has at least one venting channel 32, which establishes a connection between the recess 31 and the environment.
- the vent channel 32 (shown in phantom) connects to the bottom of the recess 31 and leads first axially and then radially outward. Trapped air can be passed during the pressing process in the gap 61 and thus in the recess 31 and escape to the outside.
- other courses for one or more ventilation channels can be selected.
- the recess 31 is circumferential, as shown in section AA in FIG.
- individual interruptions of the puncture would be conceivable, but this could lead to an uneven pressure distribution during the pressing process.
- small interruptions of the puncture 31 in the context of the invention should be regarded as circumferential.
- Sealing ring 30 can be connected to the ram of a pressing device, this connection can be done in different ways. In this case, different applications may require different embodiments of the connection, which are adapted to the respective conditions. For example, it may be significant for the design of the dummy block, whether a floating mounting to the adapter
- Press disc must be realized or the connection to the ram is already floating.
- Connecting element 40 in the form of a bolt which projects through the filler 20 in the sealing ring 30.
- a nut 50 in the thread of the connecting bolt 40 can be screwed.
- the bolt head expands preferably conically outward, so that it uniformly pulls the filler 20 during assembly to the sealing ring 30 and centered.
- the bolt head also serves as a pressing surface.
- the filler 20 and the connecting bolt 40 are made in one piece, so that the thus formed filler is screwed directly into the nut 50.
- the sealing ring 30 can be mounted for example via an internal thread 35 on a press die, not shown, a pressing device or an adapter for this purpose by the sealing ring 30 is screwed onto an associated bolt.
- a pressing device or an adapter for this purpose by the sealing ring 30 is screwed onto an associated bolt.
- threaded connections bayonet joints or other types of
- connection can be used.
- the entire pressure plate 10 can be mounted by rotating the sealing ring 30 about the longitudinal axis of the pressure plate 10 to a ram and also disassembled from it.
- the connecting element 40 could also protrude through the sealing ring 30 and in the
- Crimping dies are thus not intended to be limiting for the invention.
- the sealing ring should preferably spread only limitedly under maximum pressure load and not be loaded in the cone during the return movement of the ram, so that spreading by friction forces on the transducer is prevented.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Gasket Seals (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010062258 | 2010-12-01 | ||
DE102011007729A DE102011007729B3 (de) | 2010-12-01 | 2011-04-20 | Pressscheibe |
PCT/EP2011/071396 WO2012072686A1 (de) | 2010-12-01 | 2011-11-30 | Pressscheibe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2646180A1 true EP2646180A1 (de) | 2013-10-09 |
EP2646180B1 EP2646180B1 (de) | 2017-11-15 |
Family
ID=45872624
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11790616.4A Active EP2646180B1 (de) | 2010-12-01 | 2011-11-30 | Pressscheibe |
EP11790964.8A Active EP2646181B1 (de) | 2010-12-01 | 2011-11-30 | System aus einer pressscheibe und einem adapterstück zur montage an einem pressstempel einer pressvorrichtung |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11790964.8A Active EP2646181B1 (de) | 2010-12-01 | 2011-11-30 | System aus einer pressscheibe und einem adapterstück zur montage an einem pressstempel einer pressvorrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US9492855B2 (de) |
EP (2) | EP2646180B1 (de) |
CA (1) | CA2819279C (de) |
DE (2) | DE102010064400B4 (de) |
SI (1) | SI2646181T1 (de) |
WO (2) | WO2012072688A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL3108979T3 (pl) | 2015-06-24 | 2018-01-31 | Voestalpine High Performance Metals Sweden Ab | Blok cisnący dla prasy do wyciskania |
WO2018064771A1 (en) * | 2016-10-06 | 2018-04-12 | Exco Technologies Limited | Tool steel composition for component of die-casting apparatus or of extrusion press |
WO2020102806A1 (en) * | 2018-11-15 | 2020-05-22 | The Regents Of The University Of Michigan | Extrusion of metal material using a dummy block having a curved surface |
CN115283474B (zh) * | 2022-10-08 | 2023-01-24 | 中北大学 | 一种高性能板坯均匀正挤压控制成形模具 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7314414U (de) * | 1977-07-28 | Schloemann-Siemag Ag, 4000 Duesseldorf | Preßscheibe für den Preßstempel von Strangpressen, insbesondere von Aluminiumstrangpressen | |
JPS51122151U (de) * | 1975-03-28 | 1976-10-04 | ||
GB2067944B (en) * | 1980-01-26 | 1983-03-23 | Centry Aluminium Co Ltd | Extrusion process |
JPH0750007Y2 (ja) * | 1990-11-06 | 1995-11-15 | 日本軽金属株式会社 | ダミーブロックの押出ステムへの連結構造 |
DE4132810C2 (de) * | 1991-10-02 | 1994-02-17 | Erbsloeh Julius & August | Preßscheibe mit Entlüftungseinrichtung |
US5272900A (en) | 1992-09-18 | 1993-12-28 | Exco Technologies, Limited | Bayonet style connector for metal extrusion dummy block |
US5918498A (en) * | 1996-07-18 | 1999-07-06 | Robbins; Paul H. | Dummy block construction |
DE10036463B4 (de) | 2000-07-25 | 2005-08-04 | Heydasch, Horst | Pressscheibe und Pressvorrichtung |
-
2010
- 2010-12-30 DE DE102010064400A patent/DE102010064400B4/de active Active
-
2011
- 2011-04-20 DE DE102011007729A patent/DE102011007729B3/de active Active
- 2011-11-30 US US13/990,990 patent/US9492855B2/en active Active
- 2011-11-30 CA CA2819279A patent/CA2819279C/en active Active
- 2011-11-30 WO PCT/EP2011/071402 patent/WO2012072688A1/de active Application Filing
- 2011-11-30 SI SI201131983T patent/SI2646181T1/sl unknown
- 2011-11-30 EP EP11790616.4A patent/EP2646180B1/de active Active
- 2011-11-30 EP EP11790964.8A patent/EP2646181B1/de active Active
- 2011-11-30 WO PCT/EP2011/071396 patent/WO2012072686A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012072686A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102011007729B3 (de) | 2012-04-12 |
EP2646181B1 (de) | 2021-03-31 |
CA2819279A1 (en) | 2012-06-07 |
WO2012072688A1 (de) | 2012-06-07 |
US20130247640A1 (en) | 2013-09-26 |
CA2819279C (en) | 2018-11-13 |
SI2646181T1 (sl) | 2021-08-31 |
DE102010064400B4 (de) | 2012-09-20 |
WO2012072686A1 (de) | 2012-06-07 |
EP2646180B1 (de) | 2017-11-15 |
DE102010064400A1 (de) | 2012-06-06 |
US9492855B2 (en) | 2016-11-15 |
EP2646181A1 (de) | 2013-10-09 |
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